Differential D5752 Diff 14954 head/sys/arm/allwinner/a10_codec.c

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head/sys/arm/allwinner/a10_codec.c

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#include <machine/bus.h>		#include <machine/bus.h>

#include <dev/sound/pcm/sound.h>		#include <dev/sound/pcm/sound.h>
#include <dev/sound/chip.h>		#include <dev/sound/chip.h>

#include <dev/ofw/ofw_bus.h>		#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>		#include <dev/ofw/ofw_bus_subr.h>

#include <arm/allwinner/a10_clk.h>		#include <dev/extres/clk/clk.h>

#include "sunxi_dma_if.h"		#include "sunxi_dma_if.h"
#include "mixer_if.h"		#include "mixer_if.h"
#include "gpio_if.h"		#include "gpio_if.h"

#define TX_TRIG_LEVEL 0xf		#define TX_TRIG_LEVEL 0xf
#define RX_TRIG_LEVEL 0x7		#define RX_TRIG_LEVEL 0x7
#define DRQ_CLR_CNT 0x3		#define DRQ_CLR_CNT 0x3
▲ Show 20 Lines • Show All 671 Lines • ▼ Show 20 Lines	a10codec_probe(device_t dev)
return (BUS_PROBE_DEFAULT);		return (BUS_PROBE_DEFAULT);
}		}

static int		static int
a10codec_attach(device_t dev)		a10codec_attach(device_t dev)
{		{
struct a10codec_info *sc;		struct a10codec_info *sc;
char status[SND_STATUSLEN];		char status[SND_STATUSLEN];
		clk_t clk_apb, clk_codec;
uint32_t val;		uint32_t val;
int error;		int error;

sc = malloc(sizeof(*sc), M_DEVBUF, M_WAITOK \| M_ZERO);		sc = malloc(sizeof(*sc), M_DEVBUF, M_WAITOK \| M_ZERO);
sc->dev = dev;		sc->dev = dev;
sc->lock = snd_mtxcreate(device_get_nameunit(dev), "a10codec softc");		sc->lock = snd_mtxcreate(device_get_nameunit(dev), "a10codec softc");

if (bus_alloc_resources(dev, a10codec_spec, sc->res)) {		if (bus_alloc_resources(dev, a10codec_spec, sc->res)) {
Show All 24 Lines	error = bus_dma_tag_create(
sc->dmasize, 0, /* maxsegsize, flags */		sc->dmasize, 0, /* maxsegsize, flags */
NULL, NULL, /* lockfunc, lockarg */		NULL, NULL, /* lockfunc, lockarg */
&sc->dmat);		&sc->dmat);
if (error != 0) {		if (error != 0) {
device_printf(dev, "cannot create DMA tag\n");		device_printf(dev, "cannot create DMA tag\n");
goto fail;		goto fail;
}		}

		/* Get clocks */
		error = clk_get_by_ofw_name(dev, "apb", &clk_apb);
		if (error != 0) {
		device_printf(dev, "cannot find apb clock\n");
		goto fail;
		}
		error = clk_get_by_ofw_name(dev, "codec", &clk_codec);
		if (error != 0) {
		device_printf(dev, "cannot find codec clock\n");
		goto fail;
		}

		/* Gating APB clock for codec */
		error = clk_enable(clk_apb);
		if (error != 0) {
		device_printf(dev, "cannot enable apb clock\n");
		goto fail;
		}
/* Activate audio codec clock. According to the A10 and A20 user		/* Activate audio codec clock. According to the A10 and A20 user
* manuals, Audio_pll can be either 24.576MHz or 22.5792MHz. Most		* manuals, Audio_pll can be either 24.576MHz or 22.5792MHz. Most
* audio sampling rates require an 24.576MHz input clock with the		* audio sampling rates require an 24.576MHz input clock with the
* exception of 44.1kHz, 22.05kHz, and 11.025kHz. Unfortunately,		* exception of 44.1kHz, 22.05kHz, and 11.025kHz. Unfortunately,
* both capture and playback use the same clock source so to		* both capture and playback use the same clock source so to
* safely support independent full duplex operation, we use a fixed		* safely support independent full duplex operation, we use a fixed
* 24.576MHz clock source and don't advertise native support for		* 24.576MHz clock source and don't advertise native support for
* the three sampling rates that require a 22.5792MHz input.		* the three sampling rates that require a 22.5792MHz input.
*/		*/
a10_clk_codec_activate(24576000);		error = clk_set_freq(clk_codec, 24576000, CLK_SET_ROUND_DOWN);
		if (error != 0) {
		device_printf(dev, "cannot set codec clock frequency\n");
		goto fail;
		}
		/* Enable audio codec clock */
		error = clk_enable(clk_codec);
		if (error != 0) {
		device_printf(dev, "cannot enable codec clock\n");
		goto fail;
		}

/* Enable DAC */		/* Enable DAC */
val = CODEC_READ(sc, AC_DAC_DPC);		val = CODEC_READ(sc, AC_DAC_DPC);
val \|= DAC_DPC_EN_DA;		val \|= DAC_DPC_EN_DA;
CODEC_WRITE(sc, AC_DAC_DPC, val);		CODEC_WRITE(sc, AC_DAC_DPC, val);

#ifdef notdef		#ifdef notdef
error = snd_setup_intr(dev, sc->irq, INTR_MPSAFE, a10codec_intr, sc,		error = snd_setup_intr(dev, sc->irq, INTR_MPSAFE, a10codec_intr, sc,
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